[....] Starting enhanced syslogd: rsyslogd[ 14.598264] audit: type=1400 audit(1551897115.654:4): avc: denied { syslog } for pid=1914 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.212' (ECDSA) to the list of known hosts. 2019/03/06 18:32:16 parsed 1 programs 2019/03/06 18:32:18 executed programs: 0 syzkaller login: [ 38.437579] ------------[ cut here ]------------ [ 38.442473] WARNING: CPU: 1 PID: 2257 at kernel/signal.c:343 task_participate_group_stop+0x21f/0x2d0() [ 38.451956] Kernel panic - not syncing: panic_on_warn set ... [ 38.451956] [ 38.459299] CPU: 1 PID: 2257 Comm: 5 Not tainted 4.4.174+ #4 [ 38.465078] 0000000000000000 40758184e5514ed0 ffff8800b517fa60 ffffffff81aad1a1 [ 38.473121] 0000000000000000 ffffffff82835ee0 ffffffff8283bd40 0000000000000157 [ 38.481112] ffffffff810f7f3f ffff8800b517fb40 ffffffff813a48c2 0000000041b58ab3 [ 38.489120] Call Trace: [ 38.491704] [] dump_stack+0xc1/0x120 [ 38.497056] [] ? task_participate_group_stop+0x21f/0x2d0 [ 38.504133] [] panic+0x1b9/0x37b [ 38.509128] [] ? add_taint.cold+0x16/0x16 [ 38.514913] [] ? warn_slowpath_common.cold+0x5/0x20 [ 38.521558] [] warn_slowpath_common.cold+0x20/0x20 [ 38.528113] [] warn_slowpath_null+0x2a/0x30 [ 38.534060] [] task_participate_group_stop+0x21f/0x2d0 [ 38.540965] [] do_signal_stop+0x3a2/0x810 [ 38.546757] [] get_signal+0x5f9/0x1570 [ 38.552319] [] do_signal+0x9c/0x1840 [ 38.557665] [] ? put_files_struct+0x206/0x270 [ 38.563793] [] ? setup_sigcontext+0x780/0x780 [ 38.569939] [] ? kmem_cache_free+0x2c4/0x350 [ 38.575983] [] ? put_files_struct+0x29/0x270 [ 38.582038] [] ? do_execveat_common.isra.0+0x242/0x1e90 [ 38.589027] [] ? do_execveat_common.isra.0+0xf14/0x1e90 [ 38.596022] [] ? exit_to_usermode_loop+0xf2/0x170 [ 38.602490] [] exit_to_usermode_loop+0x127/0x170 [ 38.608903] [] syscall_return_slowpath+0x25b/0x2e0 [ 38.615462] [] int_ret_from_sys_call+0x25/0xa3 [ 38.622018] Kernel Offset: disabled [ 38.625727] Rebooting in 86400 seconds..